A kiln tail filter bag dust collector

Abstract

This application provides a kiln tail filter bag dust collector, relating to the field of kiln tail dust collection technology. It includes a shell, an air inlet, filter bag assemblies, a dust removal assembly, an air outlet, and a dust hopper. A partition plate is fixed inside the shell, and a partition cylinder is vertically fixed at the bottom of the partition plate. The partition plate divides the interior of the shell from top to bottom into a clean air chamber and a dust chamber. The partition cylinder divides the dust chamber from the outside to the inside into a separation chamber and a filtration chamber. The air inlet is located tangentially to the shell and communicates with the upper part of the separation chamber. Multiple filter bag assemblies are provided. This invention integrates cyclone separation and filter bag filtration functions into the same device through the partition plate and partition cylinder within the shell. It utilizes the centrifugal force of the separation chamber to pre-treat and remove some dust, reducing the load on the filter bag assemblies. Simultaneously, the filter bag assemblies efficiently trap fine dust, improving overall dust removal efficiency, simplifying equipment layout, reducing floor space, and decreasing maintenance points due to the increased number of equipment, thereby reducing maintenance costs.

Description

Technical Field

[0001] This application relates to the field of kiln tail dust collection technology, and more specifically, to a kiln tail filter bag dust collector. Background Technology

[0002] In the cement industry, the common practice is to use hot air drawn from the kiln tail to provide heat for the coal mill system. This involves drawing hot air from the kiln tail and introducing it into the coal mill to meet the heat requirements of raw coal drying and grinding. To reduce the amount of dust entering the coal mill, cyclone dust collectors are typically installed in the hot air duct for pretreatment. Cyclone dust collectors rely on centrifugal force to separate dust particles in the airflow. While simple in structure and low in cost, their efficiency in capturing fine dust particles is significantly insufficient due to limitations in their separation principle. Therefore, many companies install bag filters on the hot air ducts. The kiln tail flue gas, after being treated by the cyclone dust collector, enters the bag filter for secondary treatment before entering the coal mill system.

[0003] However, in the above setup, the cyclone dust collector and the bag filter dust collector are set up separately, which not only takes up a large area, but also requires separate maintenance for the two sets of equipment, increasing the number of maintenance points and thus raising maintenance costs. Summary of the Invention

[0004] The purpose of this application is to provide a kiln tail filter bag dust collector that can solve the technical problems mentioned in the background art.

[0005] This application provides a kiln tail filter bag dust collector, including:

[0006] The housing has a partition plate fixed inside, and a partition cylinder is vertically fixed at the bottom of the partition plate. The partition plate divides the interior of the housing into a clean air chamber and a dust chamber from top to bottom, and the partition cylinder divides the dust chamber into a separation chamber and a filtration chamber from the outside to the inside.

[0007] An air inlet is provided on the housing along the tangential direction of the housing and communicates with the upper part of the separation chamber;

[0008] Multiple filter bag assemblies are evenly installed on the partition plate and located in the filter chamber, and the open end of each filter bag assembly is connected to the clean air chamber.

[0009] A dust removal assembly, which is disposed on the housing, is used to periodically remove dust adhering to the filter bag assembly;

[0010] An air outlet is provided on the housing and communicates with the clean air chamber;

[0011] A dust hopper is located at the bottom of the housing and communicates with the dust chamber. An electric dust discharge valve is provided at the bottom of the dust hopper.

[0012] Furthermore, the partition plate is evenly provided with a plurality of air outlets, each of which corresponds one-to-one with a plurality of filter bag assemblies. Each filter bag assembly includes a filter bag frame and a filter bag fitted over the filter bag frame. The filter bag frame passes through the air outlets and the upper end of the filter bag frame is hung on the partition plate.

[0013] Furthermore, the dust removal assembly includes a blow-through main pipe, a pulse valve, a blow-through ring pipe, and multiple blow-through branch pipes. The blow-through ring pipe is located in the clean air chamber. The multiple blow-through branch pipes are connected to the blow-through ring pipe and correspond one-to-one with the filter bags of the multiple filter bag assemblies. One end of the blow-through main pipe is connected to the blow-through ring pipe, and the other end of the blow-through main pipe extends to the outside of the housing. The pulse valve is located on the blow-through main pipe and outside the housing.

[0014] Furthermore, a matching rectifier plate is rotatably disposed inside the separator cylinder below the filter bag assembly. The rectifier plate is uniformly designed with multiple rectifier holes, and the housing is provided with a drive assembly for driving the rectifier plate to rotate.

[0015] Furthermore, the drive assembly includes a drive motor and a mounting bracket. A pair of rotating shafts are symmetrically arranged on the rectifier plate. The rectifier plate is rotatably connected to the separator cylinder through the two rotating shafts. The drive motor is fixedly mounted outside the housing through the mounting bracket. One of the rotating shafts extends outside the housing and is connected to the output shaft of the drive motor.

[0016] Furthermore, the electric ash discharge valve is a star-shaped discharge valve.

[0017] Furthermore, the top of the housing is provided with an inspection port that communicates with the clean air chamber, and the inspection port is provided with a suitable inspection sealing door.

[0018] The beneficial effects of this utility model are:

[0019] This invention integrates cyclone separation and filter bag filtration into the same device by setting up a partition plate and partition cylinder inside the housing. It utilizes the centrifugal effect of the separation chamber to pre-treat and remove some dust to reduce the load on the filter bag assembly, and the filter bag assembly efficiently intercepts fine dust to improve the overall dust removal efficiency. It simplifies the equipment layout, reduces the floor space, and reduces the number of maintenance points, thereby reducing maintenance costs. Attached Figure Description

[0020] To more clearly illustrate the technical solutions of the embodiments of this application, the accompanying drawings used in the embodiments will be briefly introduced below. It should be understood that the following drawings only show some embodiments of this application and should not be regarded as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort.

[0021] Figure 1 These are schematic diagrams of structures in some embodiments of this application;

[0022] Figure 2 This is a first cross-sectional view of some embodiments of this application;

[0023] Figure 3 This is a second cross-sectional view of some embodiments of this application;

[0024] The reference numerals in the attached figures are as follows:

[0025] 1. Shell; 11. Clean air chamber; 12. Dust chamber; 121. Separation chamber; 122. Filter chamber; 13. Inspection and sealing door; 2. Partition plate; 21. Air outlet; 3. Partition cylinder; 4. Air inlet; 5. Filter bag assembly; 51. Filter bag frame; 52. Filter bag; 6. Dust removal assembly; 61. Pulse jet dryer; 62. Pulse valve; 63. Pulse jet ring pipe; 64. Pulse jet branch pipe; 7. Air outlet; 8. Dust hopper; 81. Electric dust discharge valve; 9. Rectifier plate; 91. Rectifier hole; 92. Rotating shaft; 10. Drive assembly; 101. Drive motor; 102. Mounting bracket. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of this application, and not all embodiments. The components of the embodiments of this application described and shown in the accompanying drawings can generally be arranged and designed in various different configurations.

[0027] Therefore, the following detailed description of the embodiments of this application provided in the accompanying drawings is not intended to limit the scope of the claimed application, but merely to illustrate selected embodiments of the application. All other embodiments obtained by those skilled in the art based on the embodiments of this application without inventive effort are within the scope of protection of this application.

[0028] It should be noted that similar labels and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures.

[0029] In the description of this application, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, or the orientation or positional relationship commonly used when the product of this application is in use. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation on this application. In addition, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance.

[0030] Furthermore, terms such as "horizontal," "vertical," and "sag" do not imply that components must be absolutely horizontal or suspended, but rather that they can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal relative to "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted.

[0031] In the description of this application, it should also be noted that, unless otherwise expressly specified and limited, the terms "set up," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances. Specific Implementation

[0032] like Figure 1-3As shown, this application provides a kiln tail filter bag dust collector, including a shell 1, an air inlet 4, a filter bag assembly 5, a dust removal assembly 6, an air outlet 7, and a dust hopper 8; wherein, a partition plate 2 is fixedly installed inside the shell 1, and a partition cylinder 3 is vertically fixedly installed at the bottom of the partition plate 2. The partition plate 2 divides the interior of the shell 1 from top to bottom into a clean air chamber 11 and a dust chamber 12, and the partition cylinder 3 divides the dust chamber 12 from the outside to the inside into a separation chamber 121 and a filtration chamber 122. The air inlet 4 is arranged on the shell 1 along the tangential direction of the shell 1, and is connected to the... The upper part of the separation chamber 121 is connected, and multiple filter bag assemblies 5 are provided. The multiple filter bag assemblies 5 are evenly installed on the partition plate 2 and located in the filter chamber 122. The open end of the filter bag assembly 5 is connected to the clean air chamber 11. The dust removal assembly 6 is provided on the housing 1 and is used to periodically remove the dust attached to the filter bag assembly 5. The air outlet 7 is provided on the housing 1 and is connected to the clean air chamber 11. The ash hopper 8 is provided at the bottom of the housing 1 and is connected to the dust chamber 12. The bottom of the ash hopper 8 is provided with an electric ash discharge valve 81. In use, dust-laden hot air enters from the air inlet. The airflow enters the separation chamber 121 through port 4, forming a rotating airflow within the chamber. Centrifugal force causes some dust particles to be thrown against the inner wall of the separation chamber 121 and fall into the ash hopper 8, achieving preliminary dust removal. The pre-treated airflow enters the filter chamber 122 through the bottom opening of the dividing cylinder. Fine dust is trapped by the filtration effect of the filter bag assembly 52. ​​The purified gas enters the clean air chamber 11 through the opening of the filter bag assembly 5 and is finally discharged from the outlet 7. The dust removal assembly 6 periodically removes the dust adhering to the filter bag assembly 5 to ensure that the dust is removed. With stable filtration efficiency, the collected dust is discharged through the ash hopper 8 and the electric ash discharge valve 81. This kiln tail filter bag dust collector integrates cyclone separation and filter bag filtration functions into the same device through the setting of the partition plate 2 and partition cylinder 3 inside the shell 1. It not only uses the centrifugal action of the separation chamber 121 to pre-treat and remove some dust to reduce the load on the filter bag assembly 5, but also improves the overall dust removal efficiency by efficiently intercepting fine dust through the filter bag 52 assembly 5. It simplifies the equipment layout, reduces the floor space, and reduces the maintenance points caused by the increase in the number of equipment, thereby reducing maintenance costs.

[0033] like Figure 2 and Figure 3 As shown, the partition plate 2 is evenly provided with a plurality of air outlets 21, and the plurality of air outlets 21 correspond one-to-one with a plurality of filter bag assemblies 5. The filter bag assembly 5 includes a filter bag frame 51 and a filter bag 52 sleeved outside the filter bag frame 51. The filter bag frame 51 passes through the air outlets 21 and the upper end of the filter bag frame 51 is hung on the partition plate 2. Specifically, there are 6 air outlets 21, which are arranged in a ring with equal spacing. The filter bag 52 is a high temperature resistant filter bag. After the dust-laden airflow is filtered through the outer surface of the filter bag 52, the dust is trapped on the outside of the filter bag 52. The purified gas enters the filter bag frame 51 through the inner cavity of the filter bag 52, and then enters the clean air chamber 11 through the corresponding air outlet 21.

[0034] like Figure 2 and Figure 3As shown, the dust removal assembly 6 includes a blow-through main pipe 61, a pulse valve 62, a blow-through ring pipe 63, and multiple blow-through branch pipes 64. The blow-through ring pipe 63 is located inside the clean air chamber 11. The multiple blow-through branch pipes 64 are connected to the blow-through ring pipe 63 and correspond one-to-one with the filter bags 52 of the multiple filter bag assemblies 5. One end of the blow-through main pipe 61 is connected to the blow-through ring pipe 63, and the other end of the blow-through main pipe 61 extends outside the housing 1. The pulse valve 62 is mounted on the blow-through main pipe 61 and located outside the housing 1. The main body of the system has a blower pipe 61 connected to a blower ring pipe 63 via a quick connector. The outer end of the blower pipe 61 is connected to a compressed air source. During dust removal, the pulse valve 62 is opened to allow compressed air to enter the blower ring pipe 63 through the blower pipe 61, and then be directionally sprayed into the interior of each filter bag 52 through the blower branch pipes 64 corresponding to the filter bags 52. The instantaneous high-pressure airflow impacts the filter bags 52, peeling off the dust adhering to the outer surface of the filter bags. The peeled dust falls into the dust hopper 8 for collection.

[0035] like Figure 2 As shown, a suitable rectifier plate 9 is rotatably arranged below the filter bag assembly 5 inside the separator cylinder 3. The rectifier plate 9 is evenly designed with multiple rectifier holes 91. The housing 1 is provided with a drive assembly 10 for driving the rectifier plate 9 to rotate. The rectifier holes 91 can guide and divert the airflow entering the filter chamber 122. When the filter bag assembly 5 is in operation, the rectifier plate 9 is in a horizontal state, and the rectifier holes 91 make the airflow evenly distributed and enter the filter chamber 122 upward, improving the filtration effect of the filter bag assembly 5. When cleaning, the drive assembly 10 drives the rectifier plate 9 to rotate 90° to make the rectifier plate 9 vertical, so that the dust peeled off from the filter bag 52 can fall from the bottom opening of the separator cylinder.

[0036] like Figure 1 and Figure 2 As shown, the drive assembly 10 includes a drive motor 101 and a mounting bracket 102. A pair of rotating shafts 92 are symmetrically arranged on the rectifier plate 9. The rectifier plate 9 is rotatably connected to the separator cylinder 3 through the two rotating shafts 92. The drive motor 101 is fixedly installed outside the housing 1 through the mounting bracket 102. One of the rotating shafts 92 extends outside the housing 1 and is connected to the output shaft of the drive motor 101. Specifically, a sealing ring is provided at the connection between the rotating shaft 92 and the housing 1, and a bearing is provided at the connection between the rotating shaft 92 and the separator cylinder. The mounting bracket 102 is fixed on the housing 1, and the drive motor 101 is fixed on the mounting bracket 102. The drive motor 101 drives the rotating shaft 92 connected to it, thereby causing the rectifier plate 9 to rotate.

[0037] like Figure 2 As shown, the electric ash discharge valve 81 is a star-shaped discharge valve. The impeller structure of the star-shaped discharge valve can achieve uniform and continuous ash discharge, avoiding dust accumulation and blockage in the ash hopper 8. The electric star-shaped discharge valve is driven by a motor to rotate the rotor impeller in the valve body, which is existing technology and will not be described in detail here.

[0038] like Figure 1 and Figure 2 As shown, the top of the housing 1 is provided with an inspection port that communicates with the clean air chamber 11, and the inspection port is provided with a suitable inspection sealing door 13; by opening the inspection sealing door 13, the filter bag assembly 5 and the dust removal assembly 6 can be inspected.

[0039] The above are merely preferred embodiments of this application and are not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. A kiln tail filter bag dust collector, characterized in that, include: The housing has a partition plate fixed inside, and a partition cylinder is vertically fixed at the bottom of the partition plate. The partition plate divides the interior of the housing into a clean air chamber and a dust chamber from top to bottom, and the partition cylinder divides the dust chamber into a separation chamber and a filtration chamber from the outside to the inside. An air inlet is provided on the housing along the tangential direction of the housing and communicates with the upper part of the separation chamber; Multiple filter bag assemblies are evenly installed on the partition plate and located in the filter chamber, and the open end of each filter bag assembly is connected to the clean air chamber. A dust removal assembly, which is disposed on the housing, is used to periodically remove dust adhering to the filter bag assembly; An air outlet is provided on the housing and communicates with the clean air chamber; A dust hopper is provided at the bottom of the housing and communicates with the dust chamber. An electric dust discharge valve is provided at the bottom of the dust hopper. A matching rectifier plate is rotatably disposed inside the separator cylinder below the filter bag assembly. The rectifier plate is uniformly designed with multiple rectifier holes. The housing is provided with a drive assembly for driving the rectifier plate to rotate.

2. The kiln tail filter bag dust collector according to claim 1, characterized in that: The partition plate is evenly provided with a plurality of air outlets, and the plurality of air outlets correspond one-to-one with the plurality of filter bag assemblies. The filter bag assembly includes a filter bag frame and a filter bag sleeved outside the filter bag frame. The filter bag frame passes through the air outlets and the upper end of the filter bag frame is hung on the partition plate.

3. The kiln tail filter bag dust collector according to claim 2, characterized in that: The dust removal assembly includes a blow-through main pipe, a pulse valve, a blow-through ring pipe, and multiple blow-through branch pipes. The blow-through ring pipe is located in the clean air chamber. The multiple blow-through branch pipes are connected to the blow-through ring pipe and correspond one-to-one with the filter bags of the multiple filter bag assemblies. One end of the blow-through main pipe is connected to the blow-through ring pipe, and the other end of the blow-through main pipe extends to the outside of the housing. The pulse valve is located on the blow-through main pipe and outside the housing.

4. The kiln tail filter bag dust collector according to claim 1, characterized in that: The drive assembly includes a drive motor and a mounting bracket. A pair of rotating shafts are symmetrically arranged on the rectifier plate. The rectifier plate is rotatably connected to the separator cylinder through the two rotating shafts. The drive motor is fixedly mounted outside the housing through the mounting bracket. One of the rotating shafts extends outside the housing and is connected to the output shaft of the drive motor.

5. A kiln tail filter bag dust collector according to claim 1, characterized in that: The electric ash discharge valve is a star-shaped discharge valve.

6. A kiln tail filter bag dust collector according to claim 1, characterized in that: The top of the housing is provided with an inspection port that communicates with the clean air chamber, and the inspection port is provided with a suitable inspection sealing door.

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